King Arms Ver.3 9mm Gear Box
A King Arms gearbox shell made to replace any shell damage or upgrade the structural integrity of your gearbox. This gearbox uses 6 included 9mm ball bearings and a subgun / SM / MP5 type selector plate.
- Subgun / SM / MP5 selector plate
- King Arms Replacement Parts
- Package comes with 9mm bearing bushings
- Material: Zinc alloy